VK [Vkontakte]

Android client for popular social network in Russia [Facebook analog].
Pros:
stay always online [if you really need it]
+ clean and friendly interface
+ stable
+ frequently updated

Cons:
- limited audio/photo features comparing to desktop version, hope that this gap will be removed in the future.

Download:
https://play.google.com/store/apps/details?id=com.vkontakte.android&hl=en